Process of treating paper for art printing.



UNITED STATES PATENT @FFIGE.

JULIUS \VEZEL, OF LEIPSIO, GERMANY.

PROCESS OF TREATING PAPER FOR ART PRINTING.

SPECZFICATION forming part of Letters Patent NO. 698,772, dated April 29, 1902.

Original application filed June 19,1901, Serial No. 65,178. Divided and this application filed October 4,1901. $eria1 No. 77,605. (No specimens.)

To all whom it may concern:

Be it known that I, JULIUS WEZEL, a subject of the King of Saxony, and a resident of Leipsic, Saxony, Germany, have invented a certain new and useful Improved Process of Treating Paper for Art Printing, of which the following is a description.

The present invention consists of a process for treating the paper used for art printing.

As is well known, the paper used for art printing and known in commerce as chromopaper-z'. e., a fine white paper provided with a very thin coating ofsize and a slight coating of blanc fixeis previous to being printed upon provided with a coating or an even layer of color or tint. Hitherto this coating has been applied to the paper imme diately it was unwound from the roll, and after having been dried the paper was again wound on the roll. This process has disadvantages in that the paper is not'always even and does not lie evenly on the coating-drum, so that the layer is often unevenly applied and the paper becomes patchy and unequal. In order to avoid these disadvantages, according to the present process the paper is first moistened as it comes from the roll, then thoroughly stretched. The coating is then applied to the perfectly evenly stretched paper, after which the said paper, with the coating, is dried and again moistened, and while again being dried is well stretched simultaneously and finally wound onthe receivingroll.

The mechanism employed for applying the coating as also for stretching and drying and eventually for calendering the paper is of the well-known type usual in works for preparing such class of paper and forming no part of the present invention need not be described.

After the second moistening the paper may be calendered and then again stretched and dried.

I claim as my invention 1. A process for coating the paper for art printing previous to the printing, according to which the paper is moistened and stretched, previous to receiving the coating, then coated and dried, then again moistened, and simultaneously dried and stretched previous to its being rolled up into a roll substantially as described.

2. A process for coating paper for art print ing previous to the printing, according to which the paper is moistened and stretched previous to receiving the coating,then coated, and dried, then again moistened and calendered and simultaneously dried and stretched and rolled up again in the manner and for the purpose substantially as described.-

In witness whereof I have hereunto set my hand in presence of two witnesses.

JULIUS WEZEL.

WVitnesses:

CHAS. J. BURT, RUDOLPH FRICKE. 

